there have been a number of searches for hoffa since the teamster leader disappeared in 1975. an enduring mystery there. wow. >>> what has four wheels and fleas? well take a look at this. dogs competingen stroller races in a california backyard. other dogs are their hapless passengers. the four canines live with the same california family. >> they need more maneuverable strollers there. not all they can do. this talented crew, races on scooters and kiddie cars with more crashes than bumpers car. their owner says they're all total clowns and having fun. the wagging tails. proof is in the pudding. >> cute video. coming up next, she made magic and millions, almost a billion from the harry potter series for kids. but now will j.k. rowling reel in their parents. we'll hear from the author as she prepares to release her first book for adults. >> food fight in cafeterias across this country. why students say eating all the healthy food is leaving them hungry for more. you are watching "world news now." ♪ ♪ >> announcer: "world news now" weather brought to you by no n hair removal